Lanthanide-doped luminescent materials have been studied extensively because of their wide applications in optoelectronic devices due to their interesting optical properties originating from the electron transitions among the 4f shell. Among these, alkali rare earth tungstates constitute a large family of inorganic compounds with the general formula ARE(MO4)2. These compounds possess tetragonal and monoclinic symmetries. Their structural diversity provides these crystals with numerous physical and chemical properties.

The ammonium paratungstate (APT) is the most important starting material in the tungsten industry, where usually its most stable APT·4H2O form is used. From APT tungsten oxides, tungsten carbides or tungsten metal can be prepared. Among others, tungsten oxides are widespread catalysts, photocatalysts, and gas sensors.

Nitrogen oxde poullution has been caught a lot attention due to its negative influence on environment. fly-ash emitted from coal combustion flue gas always carries various toxic substances, such as SO2, alkali metals and alkaline-earth metals. They tend to lower the efficiency of NOx removal and shorten the operating life-time of the SCR catalyst. V2O5-WO3/TiO2 has been greatly used in NOx removal applications.

Dye-sensitized solar cells (DSSCs), as a renewable energy source, have attracted considerable attention due to their unparalleled merits including low cost, choice of color, light weight, packing technology, environmental compatibility, and acceptable photoelectric conversion efficiency (PCE).

In urea-SCR of passenger Diesel vehicles, the NOx reduction step of urea-SCR is usually catalyzed by redox zeolites. Technology for stationary sources r emains to be dominated by catalysts that contain V2O5 and WO3 supported on TiO2 (anatase). They are meanwhile also applied for mobile sources, in heavy utility vehicles, where they are adapted to the different targets. Thus, V2O5-WO3/TiO2 catalysts had been synthesized from ammonium paratungstate (APT) for SCR applications.

Many reactions in synthetic organic chemistry are acid-catalyzed reactions. These reactions include esterification, etherification, hydration, hydrolysis, alkylation, isomerization and others. Liquid-phase esterification is an important method for producing various esters. The esters are used in the manufacturing of solvents, plasticizers, plastics, leather, perfumes, and medicine.

As the development of 5G has become a trend, 5G high-speed optical devices and their heat dissipation devices have also become the focus of attention and discussion. And there is no doubt that tungsten copper heat sink has become the best choice.

The use of biodiesel is being developed to address increasing global concerns regarding the environment and sustainable development. In biodiesel production, a large quantity of glycerol is produced as a by-product. Value-added use of glycerol is important in improving the economic viability of the biodiesel industry. One attractive route is the catalytic dehydration of glycerol to the value-added intermediate acrolein, which is widely used in the synthesis of pharmaceuticals, detergents, and polymers.

Reducing the sulfur content in hydrocarbon fuels has become an important topic in catalysis due to the continuous stringent environmental legislations. In order to fulfill these requirements, one alternative is to design and develop more efficient catalysts for the hydrodesulfurization (HDS) of crude petroleum. For this reason, the well-arranged mesoporous supports based on silica as MCM-41, HMS, and SBA-15, have attracted considerable attention in the preparation of novel hydrotreating catalysts, due to their outstanding textural properties.

When the lights are on and the streets are lit up by neon lights, have you ever wondered why a light bulb can glow and bring bright when it is connected to a power source?